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Impact of Power Profile on the Estimation of Second Life Batteries Remaining Useful Life
ISSN: 2641-9637, e-ISSN: 2641-9645
Published April 06, 2021 by SAE International in United States
Event: SAE WCX Digital Summit
Citation: Battaglia, D., D'Arpino, M., Ganesh, S., and Carlson, J., "Impact of Power Profile on the Estimation of Second Life Batteries Remaining Useful Life," SAE Int. J. Adv. & Curr. Prac. in Mobility 3(6):2906-2914, 2021, https://doi.org/10.4271/2021-01-0767.
Second-life batteries (SLBs, automotive batteries that have lost their usefulness for vehicular applications) can provide low-cost environment-friendly solutions for grid-connected systems. The estimation of the remaining useful life (RUL) of SLBs is a fundamental step for the development of appropriate business models. This paper aims at unveiling correlations between the SLB's power profile and aging performance by defining appropriate metrics. A widely accepted empirical degradation model, that can predict calendar and cycling aging, is considered for this study. Several grid-connected power profiles are analyzed, such as peak shaving for DC-fast charge stations and frequency regulation. The results of this analysis show a correlation between the SLB's replacement rate with the minimum daily SoC.